Comparison

Adobe Acrobat Sign vs pdfFiller

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Adobe Acrobat Sign

This app allows you to easily and securely get documents and forms signed electronically from anywhere. It enables you to sign documents yourself, send them to others for their signatures, track progress in real-time, and even scan paper documents into PDFs for signing.

Highlights
  • Sign documents on the go
  • Send documents for e-signature
  • Track agreement progress
  • Scan paper documents to PDF
  • Offline signing capability
  • In-person signing
  • Legally binding and secure
Features
Read full description

Get documents and forms signed. Easily. Securely. Anywhere. This app is a mobile companion for the Adobe Acrobat Sign e-signature service. With it, you’ll get an electronic signature solution you can trust, from the global leader in secure digital documents for over 25 years. Adobe Acrobat Sign is used by businesses of all sizes — including Fortune 1000 companies, healthcare organizations and financial institutions — to accelerate critical business processes in Sales, HR, Legal, and Operations. Adobe Acrobat Sign lets you e-sign documents and forms, send them to others for e-signature, track responses in real time and get signatures instantly with in-person signing. It even lets you work offline and syncs automatically when you’re back online. SIGN DOCUMENTS ON THE GO •Open and sign documents instantly. •Easily read documents before signing with Reading Mode. •Sign directly on the screen with your finger or stylus. •Sign or click to approve a document sent by others. •Delegate signing to another person or reject a signing request. •Save partially filled forms to complete at a more convenient time. •Sign documents offline. Adobe Acrobat Sign syncs automatically when you’re back online. GET SIGNATURES FROM OTHERS •Send documents for signature from your online document library, your device or email attachments. •Work with documents from Google Drive, Box, Dropbox or Adobe Document Cloud. •Use your iPad or iPhone to get signatures in person when meeting a client. •Choose a language for the signer’s experience. STORE AND MANAGE YOUR DOCUMENTS •Track progress and manage agreements with real-time status updates. •Send reminders to people who haven't signed yet. •View agreements stored in your online account. •All parties get a certified copy of the signed document automatically by email. LEGALLY BINDING AND SECURE •Adobe Acrobat Sign is compliant with e-signature laws around the world, including the U.S. ESIGN Act and the European Union eIDAS Regulation. •Signed documents are encrypted and saved as Certified PDFs. Recipients can validate document authenticity. •Each transaction includes a complete audit trail detailing events and actions. Signer geolocation information can also be added. •Adobe Acrobat Sign meets stringent security compliance standards and is certified compliant with ISO 27001, SOC 2 Type 2, HIPAA and PCI DSS v3.0 used by the Payment Card Industry. •Adobe Acrobat Sign provides protection for both the sender and the signer during the signing process with identity verification options, an audit trail, a tamper-evident seal and more. SCAN DOCUMENTS • Turn any paper document into a PDF, then send for fast e-signing. • Scan multiple document pages into a single PDF and reorder them as desired. • Easily attach, send, and sign scanned PDFs. • Enhance your camera images with boundary detection, perspective correction, and text sharpness. Adobe Acrobat Sign for iPhone and iPad requires an active subscription with one of these Adobe offerings: •Adobe Acrobat Sign Solutions •Adobe PDF Pack •Adobe Acrobat DC •Adobe Creative Cloud Complete Terms & Conditions: Your use of this application is governed by the Adobe General Terms of Use (https://adobe.com/go/terms_linkfree_en) and the Adobe Privacy Policy (http://www.adobe.com/go/privacy_policy_linkfree_en). Do Not Sell My Personal Information: https://www.adobe.com/privacy/ca-rights-linkfree.html

About

pdfFiller

This app transforms your device into a mobile office for managing PDF documents. Edit, eSign, and fill out forms, then share or export them. It offers secure storage and access to millions of templates, with offline capabilities.

Highlights
  • Edit PDF documents
  • Esign and fill out forms
  • Share and collaborate on documents
  • Securely store unlimited documents
  • Access millions of fillable templates
  • Work offline
Features
Currently charting
Read full description

pdfFiller is a powerful mobile app that transforms your iOS device into a fully equipped office. With an extensive set of features, you can edit, eSign, and manage an unlimited number of PDF documents from anywhere. Try pdfFiller to see how it can revolutionize the way you work. “pdfFiller does more than just bring a few new editing tricks to PDFs. Actually, this PDF app can add extra depth to the way we interact with these popular files.” — CultOfMac.com “The app is easy to use, lets you organize files into folders, and connects to Dropbox, Google Drive, Box, and OneDrive.” — MakeUseOf.com EDIT PDF DOCUMENTS • Easily edit any PDF contract, invoice, or tax form on your mobile device • Highlight content, erase, or blackout sensitive information in the documents • Use various annotation tools to add text, images, dates, check marks, and more ESIGN AND FILL OUT FILLABLE FORMS • Quickly eSign contracts, agreements, and deals with just a few taps • Send an unlimited number of documents for signing • Create your signature or initials by drawing them on your device’s screen SHARE AND EXPORT • Invite others to collaborate by sharing documents by email, link, or text message • Set permissions for the recipients allowing them to view, edit, or sign the document • Print, fax, and save documents as Word, Excel, and PowerPoint files STORE AN UNLIMITED NUMBER OF DOCUMENTS • Protect your documents with the same level of security and encryption used in the banking industry • Keep your documents up-to-date on all your devices and access them from a smartphone, laptop, or tablet • Start working on a document on one device and pick it up on another one using your pdfFiller account FIND FILLABLE TEMPLATES • Search among millions of ready-to-fill templates in our PDF Library • Add templates to your account and use them as many times as you need • Create professional-looking documents using high-quality business and legal templates OFFLINE MODE • Turn on offline mode to work on documents without interruptions • View, edit, and eSign documents even without an internet connection • Sync the changes you made when you’re back online 7-DAY FREE TRIAL • Try out all paid features free for 7 days • Select a plan that best suits your needs • Cancel anytime without any obligations Subscription will be charged to your credit card through your App Store account. Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. Manage your subscription in the Account Settings on the App Store after purchase. Terms of use: https://www.pdffiller.com/en/terms_of_services.htm Privacy policy: https://www.pdffiller.com/mobile/privacy_policy.html We appreciate your feedback, so please email us at support@pdffiller.com

Screenshots

Adobe Acrobat Sign4 screens
pdfFiller4 screens

Verdict

The call

The clearest difference is rating: pdfFiller at 4.5 against Adobe Acrobat Sign's 2.2. pdfFiller also leads on update cadence (fortnightly vs every 2 months) and ratings volume (9.1K vs 646). Adobe Acrobat Sign's advantage is in-app purchases (none vs 12). On price, ads, monetization model and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. pdfFiller sells 10 in-app purchases, starting at $19.99 per month. Adobe Acrobat Sign asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

pdfFiller holds the better App Store score, 4.5 against 2.2. That said, the two scores are not equally well evidenced: pdfFiller has 9.1K ratings behind it against 646, so its average is the more settled of the two. Written reviews point the same way: 11% of Adobe Acrobat Sign's written reviews are positive against 20% of pdfFiller's.

UpkeepUpdate frequency

Adobe Acrobat Sign ships an update every 2 months, pdfFiller fortnightly. The most recent releases landed on October 20, 2026 and October 21, 2026 respectively.

Scorecard6 real differences · 5 level
Adobe Acrobat Sign versus pdfFiller: the parameters behind the verdict, then further details
ParameterAdobe Acrobat SignpdfFiller
PriceFreeFree
Rating2.2 (646 ratings)4.5 (9.1K ratings) — better
Positive reviews10.9% of reviews20.2% of reviews — better
Number of ratings6469.1K — better
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank—#46 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.015.0
Further details — not scored
Size140 MB178 MB
Age rating4+4+
DeveloperAdobe Inc.airSlate, Inc.

Customer experience

Adobe Acrobat Sign

All ratings645 ratings
Positive27.8%
Neutral5.0%
Negative67.3%
Written reviews349 reviews
Positive10.9%
Neutral4.3%
Negative84.8%

pdfFiller

All ratings8,461 ratings
Positive85.6%
Neutral2.6%
Negative11.9%
Written reviews589 reviews
Positive20.2%
Neutral2.0%
Negative77.8%

User reviews

Adobe Acrobat Sign

From 646 App Store ratings

What we love

  • 🚀 Convenient to use
  • 💡 Useful for business
  • 👍 Easy to navigate
  • 🚀 Saves time

Room to improve

  • 🐛 Buggy and crashes frequently
  • 🔑 Difficult to login and stay signed in
  • 👎 Poor user interface
  • 🤔 Lacks key functionality
  • 💰 Overpriced for the features

pdfFiller

From 9.1K App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Makes virtual work easy
  • 💡 Great customer service/support
  • 👍 Simple and organized
  • 👍 Helpful for PDF management

Room to improve

  • 🐛 Buggy and glitchy
  • 💰 Expensive subscription
  • 🔒 Concerns about privacy and security
  • 🤥 Misleading/deceptive advertising
  • 🔒 Difficult to cancel subscription

Bugs and requests

Adobe Acrobat Sign

Reported bugs

4 issues
  • Documents fail to load or send
  • App redirects to website instead of functioning in-app
  • Inconsistent behavior across iOS and Android
  • Signing process often does not work as expected

Requested features

5 requests
  • Integration with OneDrive and other cloud storage
  • Ability to resize signature/initial boxes
  • Offline signing capability
  • Streamlined login process
  • Improved notification system

pdfFiller

Reported bugs

4 issues
  • Text/annotations not saving correctly
  • Freezing/crashing issues
  • Incompatibility with certain devices
  • Login/account issues

Requested features

5 requests
  • Undo/redo functionality
  • Ability to control opacity of annotations
  • Better file management options
  • Improved mobile experience
  • Clearer pricing and subscription details

In-app purchases

None

Adobe Acrobat Sign

No in-app purchases

10 purchases

pdfFiller

Subscriptions10
  • PDF editor • Basic Monthly$19.991 Month
  • PDF editor • Basic Monthly7 Days trial$19.991 Month
  • PDF editor • Plus Monthly$29.991 Month
Show 7 more
  • PDF editor • Plus Monthly7 Days trial$29.991 Month
  • PDF editor • Premium Monthly7 Days trial$39.991 Month
  • Premium Monthly$39.991 Month
  • PDF editor • Basic Annual7 Days trial$95.991 Year
  • PDF editor • Basic Annual$95.991 Year
  • PDF editor • Plus Annual7 Days trial$119.991 Year
  • PDF editor • Premium Annual7 Days trial$179.991 Year

Questions

Is Adobe Acrobat Sign free?
Adobe Acrobat Sign is free to download, with no in-app purchases.
Is pdfFiller free?
pdfFiller is free to download, with in-app purchases available.
Which has better reviews, Adobe Acrobat Sign or pdfFiller?
pdfFiller is rated higher. Adobe Acrobat Sign averages 2.2 out of 5 from 646 ratings, while pdfFiller averages 4.5 from 9.1K ratings.
Do Adobe Acrobat Sign or pdfFiller have ads?
Neither Adobe Acrobat Sign nor pdfFiller shows ads.
Which is updated more often, Adobe Acrobat Sign or pdfFiller?
Adobe Acrobat Sign ships an update every 2 months, and pdfFiller fortnightly. Most recently, Adobe Acrobat Sign was updated on October 20, 2026 and pdfFiller on October 21, 2026.

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